diff --git a/conformance/results/mypy/version.toml b/conformance/results/mypy/version.toml
index 867a79fe..b72d4180 100644
--- a/conformance/results/mypy/version.toml
+++ b/conformance/results/mypy/version.toml
@@ -1,2 +1 @@
 version = "mypy 1.17.1"
-test_duration = 2.04
diff --git a/conformance/results/pyright/version.toml b/conformance/results/pyright/version.toml
index 7e373c1a..ec4415b1 100644
--- a/conformance/results/pyright/version.toml
+++ b/conformance/results/pyright/version.toml
@@ -1,2 +1 @@
 version = "pyright 1.1.403"
-test_duration = 1.83
diff --git a/conformance/results/results.html b/conformance/results/results.html
index 40ce04d0..151069d7 100644
--- a/conformance/results/results.html
+++ b/conformance/results/results.html
@@ -159,16 +159,12 @@ <h3>Python Type System Conformance Test Results</h3>
         <div class="table_container"><table><tbody>
 <tr><th class="col1">&nbsp;</th>
 <th class='tc-header'><div class='tc-name'>mypy 1.17.1</div>
-<div class='tc-time'>2.0sec</div>
 </th>
 <th class='tc-header'><div class='tc-name'>pyright 1.1.403</div>
-<div class='tc-time'>1.3sec</div>
 </th>
 <th class='tc-header'><div class='tc-name'>pyre 0.9.25</div>
-<div class='tc-time'>10.2sec</div>
 </th>
 <th class='tc-header'><div class='tc-name'>zuban 0.0.19</div>
-<div class='tc-time'>0.32sec</div>
 </th>
 </tr>
 <tr><th class="column" colspan="5">
diff --git a/conformance/results/zuban/version.toml b/conformance/results/zuban/version.toml
index d3d2104d..9f28f9ef 100644
--- a/conformance/results/zuban/version.toml
+++ b/conformance/results/zuban/version.toml
@@ -1,2 +1 @@
 version = "zuban 0.0.19"
-test_duration = 0.32
diff --git a/conformance/src/main.py b/conformance/src/main.py
index 484688b7..4b8a683d 100644
--- a/conformance/src/main.py
+++ b/conformance/src/main.py
@@ -22,7 +22,6 @@ def run_tests(
     root_dir: Path,
     type_checker: TypeChecker,
     test_cases: Sequence[Path],
-    skip_timing: bool = False,
 ):
     print(f"Running tests for {type_checker.name}")
 
@@ -30,6 +29,8 @@ def run_tests(
     tests_output = type_checker.run_tests([file.name for file in test_cases])
     test_duration = time() - test_start_time
 
+    print(f"Completed tests for {type_checker.name} in {test_duration:.2f} seconds")
+
     for _, output in tests_output.items():
         type_checker.parse_errors(output.splitlines())
 
@@ -40,7 +41,7 @@ def run_tests(
             type_checker, results_dir, test_case, tests_output.get(test_case.name, "")
         )
 
-    update_type_checker_info(type_checker, root_dir, test_duration, skip_timing=skip_timing)
+    update_type_checker_info(type_checker, root_dir)
 
 
 def get_expected_errors(test_case: Path) -> tuple[
@@ -217,9 +218,7 @@ def update_output_for_test(
             tomlkit.dump(existing_results, f)
 
 
-def update_type_checker_info(
-    type_checker: TypeChecker, root_dir: Path, test_duration: float, skip_timing: bool = False
-):
+def update_type_checker_info(type_checker: TypeChecker, root_dir: Path):
     # Record the version of the type checker used for the latest run.
     version_file = root_dir / "results" / type_checker.name / "version.toml"
 
@@ -234,8 +233,6 @@ def update_type_checker_info(
         existing_info = {}
 
     existing_info["version"] = type_checker.get_version()
-    if not skip_timing:
-        existing_info["test_duration"] = round(test_duration, 2)
 
     version_file.parent.mkdir(parents=True, exist_ok=True)
     with open(version_file, "w") as f:
@@ -266,7 +263,7 @@ def main():
             if not type_checker.install():
                 print(f"Skipping tests for {type_checker.name}")
             else:
-                run_tests(root_dir, type_checker, test_cases, skip_timing=options.skip_timing)
+                run_tests(root_dir, type_checker, test_cases)
 
     # Generate a summary report.
     generate_summary(root_dir)
diff --git a/conformance/src/options.py b/conformance/src/options.py
index 93caef02..89120774 100644
--- a/conformance/src/options.py
+++ b/conformance/src/options.py
@@ -9,7 +9,6 @@
 @dataclass
 class _Options:
     report_only: bool | None
-    skip_timing: bool
 
 
 def parse_options(argv: list[str]) -> _Options:
@@ -20,10 +19,5 @@ def parse_options(argv: list[str]) -> _Options:
         action="store_true",
         help="regenerates the test suite report from past results",
     )
-    reporting_group.add_argument(
-        "--skip-timing",
-        action="store_true",
-        help="do not update timing information in the output files",
-    )
     ret = _Options(**vars(parser.parse_args(argv)))
     return ret
diff --git a/conformance/src/reporting.py b/conformance/src/reporting.py
index c1768724..cff2dc46 100644
--- a/conformance/src/reporting.py
+++ b/conformance/src/reporting.py
@@ -46,15 +46,8 @@ def generate_summary_html(root_dir: Path) -> str:
             existing_info = {}
 
         version = existing_info["version"] or "Unknown version"
-        test_duration = existing_info.get("test_duration")
 
         summary_html.append(f"<th class='tc-header'><div class='tc-name'>{version}</div>")
-        if test_duration is not None:
-            if test_duration < 1:
-                duration = f"{test_duration:.2f}"
-            else:
-                duration = f"{test_duration:.1f}"
-            summary_html.append(f"<div class='tc-time'>{duration}sec</div>")
         summary_html.append("</th>")
 
     summary_html.append("</tr>")